Files
simplex-chat/packages/simplex-chat-python
Evgeny 7497b90e7c core, ui: allow indefinite deletion from history for public channel/group owners/moderators (#6972)
* Revert "core: forward compatible support for owners/admins/moderations deleting channel and public group messages without limitations (#6962)"

This reverts commit 08108ebabb.

* core, ui: allow indefinite deletion from history for public channel/group owners/moderators

* style

Co-authored-by: Evgeny <evgeny@poberezkin.com>

* refactor

* show error on deletion

* better alerts

* test

* plan

* simplify test

* bot api docs

* refactor

* test that removed from history is not delivered to the new subscribers

* fix, refactor

* fix

* rename

* rename predicate in UI

* rename

* do not forward channel deletions from history

* remove redundant check

---------

Co-authored-by: Evgeny @ SimpleX Chat <259188159+evgeny-simplex@users.noreply.github.com>
2026-05-13 15:24:52 +01:00
..

SimpleX Chat Python library

Python 3.11+ client for SimpleX Chat bots. Equivalent to the Node.js library.

Install

pip install simplex-chat

The native libsimplex is downloaded lazily on first use. To pre-fetch:

python -m simplex_chat install                     # sqlite (default)
python -m simplex_chat install --backend postgres  # linux-x86_64 only

Quick start

import re
from simplex_chat import Bot, BotProfile, Message, SqliteDb, TextMessage

bot = Bot(
    profile=BotProfile(display_name="Squaring bot"),
    db=SqliteDb(file_prefix="./squaring_bot"),
    welcome="Send me a number, I'll square it.",
)

@bot.on_message(content_type="text", text=re.compile(r"^-?\d+(\.\d+)?$"))
async def square(msg: TextMessage) -> None:
    n = float(msg.text or "0")
    await msg.reply(f"{n} * {n} = {n * n}")

@bot.on_message(content_type="text")
async def fallback(msg: Message) -> None:
    await msg.reply("Send me a number, like 7 or 3.14.")

if __name__ == "__main__":
    bot.run()

bot.run() blocks. The connection address is logged on startup — paste it into a SimpleX client to talk to the bot. Ctrl+C to stop.

Three decorators: @bot.on_message(...), @bot.on_command(name), @bot.on_event(tag). Message handlers are first-match-wins in registration order, so register specific filters first and catch-alls last.

See examples/squaring_bot.py for the full example.

Development

uv venv && source .venv/bin/activate
uv pip install -e '.[dev]'
ruff check && pyright && pytest tests/

Wire types under src/simplex_chat/types/_*.py are generated. Regenerate with cabal test simplex-chat-test --test-options='--match Python'.

Release

Manual for now. Bump _version.py:__version__, build a wheel, upload to PyPI:

uv build --wheel
uv publish --token "$PYPI_TOKEN"

License

AGPL-3.0